Question

Tentu kan hasil dari :
1. -9 ( x-2 ) + 6 + 6x = 7x - 2 ( 3x + 4 )
2. 7x - 5 ( 2x + 3 ) = 4 - ( 2x + 6 )
tentukan dengan menggunakan cara

Answer 1

1.
-9 (x-2) + 6 + 6x = 7x - 2 (3x+4)
-9x + 18 + 6 + 6x = 7x - 6x - 8
-9x + 6x + 18 + 6 = x - 8
-3x + 24 = x - 8
-3x - x = -8 - 24
-4x = -32
x = -32/-4
x = 32/4
x = 8

2.
7x - 5 (2x + 3) = 4 - (2x + 6)
7x - 10x - 15 = 4 - 2x - 6
-3x - 15 = -2x + 4 - 6
-3x - 15 = -2x - 2
-3x + 2x = -2 + 15
-x = 13
x = -13

Semoga bermanfaat.. ^_^ !!